Koloni is a village and administrative centre (chef-lieu) of the commune of Niantaga in the Cercle of Koutiala in the Sikasso Region of southern Mali.

The French explorer René Caillié stopped at Koloni on 21 February 1828 on his journey to Timbuktu.

In his book Travels through Central Africa to Timbuctoo published in 1830 he wrote:

At ten in the morning we arrived at Coloni, a little village situated in a beautiful, fertile and well cultivated plain, surrounded by a great number of large bombases. ...

The village of Coloni, which is surrounded by two mud walls, contains a population of about four hundred, consisting of Foulahs, Bambaras, and Mandingoes: it is shaded by large mimosas and some bombaces.